[1PS-142]
우수논문발표상 응모자Ultrathin Transformable Nanomembranes for Imperceptible and High-Performance Bioelectronics
발표자이대연 (울산과학기술원)
연구책임자손동희 (성균관대학교), 김봉수 (울산과학기술원)
Abstract
Next-generation bioelectronics require ultrathin, soft, and high-performance materials for seamless interfacing with dynamic tissues. We present a Transformable, imperceptible Hydrogel-elastomer adhesive bilayer based on Ionic-eletronic conductive Nanomembranes (THIN, total thickness = 350 nm). THIN combines a hydrophilic, adhesive hydrogel (Alg-CA) with a hydrophobic semiconductor (P(g2T2-Se)) in an amphiphilic heterostructure. Selenophene substitution enhances backbone planarity and interchain interactions, enabling superior ionic-electronic conduction (μC* = 1034 F cm-1V-1s-1) and strain-insensitive performance. Upon hydration, THIN softens (hardness: 1.35 to 0.035 GPa; stiffness: 0.16 to 9.11×10-5 GPa μm4), ensuring dry-state handling and conformal contact. In vivo application to rat sciatic nerve and heart demonstrates stable signal acquisition and long-term biocompatibility, establishing THIN as a promising platform for soft bioelectronics.